Home / 8,387.23-12,582.91-4,172.47

Finding the Fourth Proportional to 8,387.23, 12,582.91 and 4,172.47

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Solution

The fourth proportional to 8,387.23, 12,582.91 and 4,172.47 is: 6,259.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,387.23 : 12,582.91 = 4,172.47 : x
  2. Step 2: Convert to fraction form
    8,387.23/12,582.91 = 4,172.47/x
  3. Step 3: Cross multiply
    8,387.23x = 12,582.91 × 4,172.47
  4. Step 4: Simplify right side
    8,387.23x = 52,501,835.51
  5. Step 5: Solve for x
    x = 52,501,835.51/8,387.23
  6. Step 6: Final answer
    x = 6,259.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.